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High levels of SIVmnd-1 replication in chronically infected Mandrillus sphinx.

Abstract：

:Viral loads were investigated in SIVmnd-1 chronically infected mandrills and the results were compared with those previously observed in other nonpathogenic natural SIV infections. Four naturally and 11 experimentally SIVmnd-1-infected mandrills from a semi-free-ranging colony were studied during the chronic phase of infection. Four SIVmnd-1-infected wild mandrills were also included for comparison. Twelve uninfected mandrills were used as controls. Viral loads in all chronically infected mandrills ranged from 10(5) to 9 x 10(5) copies/ml and antibody titers ranged from 200 to 14,400 and 200 to 12,800 for anti-V3 and anti-gp36, respectively. There were no differences between groups of wild and captive mandrills. Both parameters were stable during the follow-up, and no clinical signs of immune suppression were observed. Chronic SIVmnd-1-infected mandrills presented slight increases in CD20+ and CD28+/CD8+ cell counts, and a slight decrease in CD4+/CD3+ cell counts. A slight CD4+/CD3+ cell depletion was also observed in old uninfected controls. Similar to other nonpathogenic models of lentiviral infection, these results show a persistent high level of SIVmnd-1 replication during chronic infection of mandrills, with minimal effects on T cell subpopulations.

journal_name

Virology

journal_title

Virology

authors

Pandrea I,Onanga R,Kornfeld C,Rouquet P,Bourry O,Clifford S,Telfer PT,Abernethy K,White LT,Ngari P,Müller-Trutwin M,Roques P,Marx PA,Simon F,Apetrei C

doi

10.1016/j.virol.2003.08.015

subject

Has Abstract

pub_date

2003-12-05 00:00:00

pages

119-27

issue

1

eissn

0042-6822

issn

1096-0341

pii

S0042682203006287

journal_volume

317

pub_type

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